Designed: This style massage slipper is designed that combining ergonomic with the ancient principles of reflexology.SIZE SUGGESTION - Slipper is slightly narrow in width, if you have wide feet, we recommend buying a size up. Comfortable Feeling: You may feel uncomfortable or painful during the first few uses. You can put on your socks and shorten your use time to help your feet adjust. Pain indicates that the product is really effective, you will get used to it and start craving it because massage is good for your health. High-Grade PVC Material: It has been carefully chosen health PVC material with durability, comfort, quality and highly elastic. Thickened sole that has been designed to absorb shocks resulting from walking on hard surfaces, so helping to reduce tension in your feet, legs, and lower back. Fast Drying and Breathable: Made of high-elastic rubber material, lightweight and water-resistant. Our slippers do not absorb the odor and counteract the odor of any foot. They can also be easily wiped clean with a clean, damp cloth. Suitable for a variety of occasions: summer, spring, autumn, winter, indoor bedroom, bathroom, living room, spa, bath, indoor, balcony, beach sandals, cafe, restaurant, hotel, massage shop, after exercise, after bath, after shower, etc. (Please carefully check the size chart before buying and choose the shoes that suit you.)